Sea & Sea MDX-a7IV Underwater Housing for Sony a7R IV with Vacuum Pump Leak Alarm

Sea & Sea MDX-a7IV Underwater Housing for Sony a7R IV with Vacuum Pump Leak Alarm

Bring your Sony a7R IV mirrorless camera beneath the waves to capture the beauty of the undersea world with the Sea & Sea MDX-a7IV Underwater Housing with Vacuum Pump Leak Alarm. It comes equipped with fiber-optic and sync cord strobe connectors and supports the optional, internal Optical YS Converter S1, which provides TTL capability with Sea & Sea YS strobes (Sony adapter required). Grip Plus silicone grip inserts permit firm, steady handling of the housing, and smart yellow highlights guide your eye to key controls. Mechanical levers, push buttons, and dials provide access to virtually all camera functions. Both grips are topped with SA8 Fixed Ball Bases for attaching arms to hold strobes, lights, etc.

Built for durability, the housing is constructed from precision-machined aluminum that has been anodized for resistance to corrosion. The housing is designed with a buoyancy pocket that reduces its weight underwater or can accommodate a mobile battery charger for more shooting time. The vacuum pump leak alarm unit, which was previously available as an option, is now included as standard equipment. It is effective not only for the early detection of underwater flooding accidents but also for the protection of equipment by checking its waterproof performance before entry.

The MDXL-a7IV ships without a required lens port, and accepts a series of interchangeable ports for various lenses. For compatibility details, see the Port Chart. The housing ships with the 0.5x optical viewfinder, but optional 0.66x, 0.8x, VF45, and VF180 viewfinders can be added on to enhance your view for better shot composition underwater.

Construction Details

• Depth rating: 328
• Vacuum pump leak alarm unit is effective not only for the early detection of underwater flooding accidents but also for the protection of equipment by checking its waterproof performance before entry
• Built to be durable, the housing is precision-machined from anodized aluminum alloy for resistance to corrosion
• Equipped with two sacrificial zinc anodes that will corrode to protect sensitive parts of the housing

Strobe Connection and Use

• Configured with dual fiber-optic cable ports and 2-pin sync cord connector for external strobes
• Supports optional, internal Optical Converter S1 for TTL-capability
• Sync cord connector allows for manual flash exposure

Controls, Handling, and Operation

• Ergonomic, mechanical controls, including levers, push buttons, and dials, provide access to virtually all camera functions, including diopter adjustment dial
• Important controls, such as front dial, rear dial, C1 lever, C2 lever, and AF-ON, are easily accessible while you re holding grips
• Grip Plus silicone grip inserts for firm, comfortable handling
• SA8 Fixed Ball Base on each grip for attaching arms/accessories
• Most levers and buttons will glow in dark environments for quick and easy identification
• Buoyancy pocket reduces underwater weight or accommodates the mobile battery charger

Lens Port System

• Ships without a required lens port
• Accepts a series of interchangeable ports for various lenses
• For compatibility details, see the port chart linked above